[gentoo-dev] [PATCH] eutils.eclass: Show death notice only when user patches were really applied

[Thomas Deutschmann <whissi@gentoo.org>]

As part of the user requested feature from [Gentoo-Bug #543878]
eutils.eclass shows a warning regarding user applied patches in case of an
error [Link 1].

However this warning will always be shown even if no user patch were
applied at all (example: empty /etc/portage/<cat>/<pkg> directory).

This commit adds a new global variable "EPATCH_N_APPLIED_PATCHES" which
tracks the number of applied user patches. This allows us to only show the
notice when user patches were really applied.

Link: https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/eclass/eutils.eclass?r1=1.443&r2=1.444

Gentoo-Bug: https://bugs.gentoo.org/543878
---
 eclass/eutils.eclass | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/eclass/eutils.eclass b/eclass/eutils.eclass
index dbedffe..025e388 100644
--- a/eclass/eutils.eclass
+++ b/eclass/eutils.eclass
@@ -292,6 +292,10 @@ EPATCH_OPTS=""
 #	-E - automatically remove empty files
 # @CODE
 EPATCH_COMMON_OPTS="-g0 -E --no-backup-if-mismatch"
+# @VARIABLE: EPATCH_N_APPLIED_PATCHES
+# @DESCRIPTION:
+# Counter variable which indicates how many patches were applied.
+EPATCH_N_APPLIED_PATCHES=0
 # @VARIABLE: EPATCH_EXCLUDE
 # @DESCRIPTION:
 # List of patches not to apply.	 Note this is only file names,
@@ -595,6 +599,8 @@ epatch() {
 			: $(( count++ ))
 		done
 
+		: $(( EPATCH_N_APPLIED_PATCHES++ ))
+
 		# if we had to decompress the patch, delete the temp one
 		if [[ -n ${PIPE_CMD} ]] ; then
 			rm -f "${PATCH_TARGET}"
@@ -1736,13 +1742,16 @@ epatch_user() {
 		[[ -r ${EPATCH_SOURCE} ]] || EPATCH_SOURCE=${EPATCH_USER_SOURCE}/${CHOST}/${check}
 		[[ -r ${EPATCH_SOURCE} ]] || EPATCH_SOURCE=${EPATCH_USER_SOURCE}/${check}
 		if [[ -d ${EPATCH_SOURCE} ]] ; then
+			local old_n_applied_patches=${EPATCH_N_APPLIED_PATCHES}
 			EPATCH_SOURCE=${EPATCH_SOURCE} \
 			EPATCH_SUFFIX="patch" \
 			EPATCH_FORCE="yes" \
 			EPATCH_MULTI_MSG="Applying user patches from ${EPATCH_SOURCE} ..." \
 			epatch
 			echo "${EPATCH_SOURCE}" > "${applied}"
-			has epatch_user_death_notice ${EBUILD_DEATH_HOOKS} || EBUILD_DEATH_HOOKS+=" epatch_user_death_notice"
+			if [[ ${old_n_applied_patches} -lt ${EPATCH_N_APPLIED_PATCHES} ]]; then
+				has epatch_user_death_notice ${EBUILD_DEATH_HOOKS} || EBUILD_DEATH_HOOKS+=" epatch_user_death_notice"
+			fi
 			return 0
 		fi
 	done
-- 
2.9.3